The bad loan problem of Indian banks arising out of its stressed assets and non-performing assets (NPAs) may be far from over.

India Ratings, in its report said, “We estimate that potentially Rs 2.6 lakh crore of corporate and SMEs loans – which would be 3.2% of total bank credit will be recognised as stressed loans by financial year 2019.”

Three large private sector banks have disclosed divergence in non-performing assets (NPAs), and this has made India Ratings believe that a significant portion of unrecognised bad loans in the system will start trickling in the next 12-18 months.

Yes Bank, in its financial report, showed gross NPAs worth Rs 748.9 crore in FY16. However, as per the RBI's assessment, the bank's bad loans were worth Rs 4,925 crore – which would mean a divergence of Rs 4,176.7 crore.

Yes Bank clarified that the disclosure made in divergence in asset classification and provisions in non-performing assets (NPAs) in its Annual Audited Financial Statement is in conformity with the Reserve Bank of India (RBI) guidelines.

Similarly, Axis Bank which reported Rs 6,087.5 crore of gross NPA in FY16, recorded a divergence of Rs 9,478 crore.

RBI, in April 2017 said, "There have been instances of material divergences in banks’ asset classification and provisioning from the RBI norms, thereby leading to the published financial statements not depicting a true and fair view of the financial position of the bank.”

Sumeet Kariwala Subramanian Iyer, Anil Agarwal and Rahul Gupta of Morgan Stanley, in a report titled 'Annual Report Takeaway -- High GNPL Divergence with RBI' dated May 12, 2017 said, “We expect investors to be closely tracking this data at all banks, and would also be concerned about potential divergence in FY17 results as well."

India Ratings estimates that banks have been sitting on unrecognised stressed loans worth Rs 7.7 lakh crore including both corporates and SME debt – which holds 22% of total bank credit.

Madan Sabnavis and Manisha Sachdeva, economists at Care Ratings said, “It seems that these private sector banks may have reached a stage where they have completed the process of recognising the Non-Performing assets.”

Care Ratings said, "The question posed is whether this is a plateau reached by these banks or whether the number could increase in the coming quarters. Some of these banks have reported that they have managed to lower the volume of NPAs at a faster pace than fresh slippages, which is a positive sign for the system as it does indicate that the worst may be behind us."

"While the iron and steel sector has seen lot of stress recognition in the AQR exercise conducted by the RBI in the last fiscal, provisioning continues to remain inadequate considering higher loss given default estimates, " added India Ratings.

India Ratings expects impaired assets to peak at 12.5%-13% by FY18/FY19 while credit costs will show an extended recovery period as a large proportion of the recently acquired higher–bucket non-performing loans keep aging.